Tuesday

October 21, 2014

October 21, 2014

Posted by **sara** on Wednesday, December 1, 2010 at 12:47pm.

25 47 32 56

At a .05 level of significance, determine whether or not the mean of the population from which this sample was taken is significantly different from 48. (Assume the population is normally distributed.)

- stats -
**PsyDAG**, Thursday, December 2, 2010 at 4:08pmZ = (mean1 - mean2)/standard error (SE) of difference between means

SEdiff = √(SEmean1^2 + SEmean2^2)

SEm = SD/√(n-1)

If only one SD is provided, you can use just that to determine SEdiff.

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion related to the Z score.

**Answer this Question**

**Related Questions**

statistik - Below are random sample of 4 observations. 25,75,32,56 Based on the ...

Stats - Recently, an automobile insurance company performed a study of a random ...

Stats - I just need help with starting how to calculate the problem I am so lost...

stats - A statistics practitioner wishes to test the following hypothesis: H0...

business stats - Given the following information about a hypothesis test of the ...

math - Q:The table below shows a distribution and the observed frequencies of ...

Statistics - You are given the following information obtained from a random ...

statistics - A sample of 40 observations is selected from one approximately ...

statistics - A sample of 40 observations is selected from one approximately ...

Maths - A psychological test was given to 92 teenage boys and 68 teenage girls. ...